How To Fix TU190 - Cannot change schedule record &1 &2 - billing order already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: TU - Billing/Scheduling/Budget Billing

• Message number: 190

• Message text: Cannot change schedule record &1 &2 - billing order already exists

What causes this issue?

You cannot change this schedule record of portion &V1& for scheduled
billing date &V2& because a billing order for installation &V3& already
exists for this scheduled billing date.
The scheduled billing date is the key field of the billing order. This
ensures that no billing period is used twice for meter reading and
billing.

System Response

You can only view the schedule record in display mode.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.